Lisa M Hassler, M.D.

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

158540 Issued in MA

Practice address

24 Newton Street
Southboro Medical Group
Southboro, MA 01772

Phone

(508) 460-3100

NPI assigned

May 4, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in MA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: lisa.hassler.npi1336197508.reliant@direct.optumcare.masshiway.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Reliant Medical Group, Inc

  • Family Medicine Physician
  • Worcester, MA
  • NPI 1720017528

  Pediatrics

  Medicare reassignment NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1146700800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1336197508",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7 STOCKTON ST",
            "city": "BOYLSTON",
            "state": "MA",
            "postal_code": "015052003",
            "telephone_number": "508-460-3100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "24 NEWTON STREET",
            "address_2": "SOUTHBORO MEDICAL GROUP",
            "city": "SOUTHBORO",
            "state": "MA",
            "postal_code": "01772",
            "telephone_number": "508-460-3100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HASSLER",
        "first_name": "LISA",
        "middle_name": "M",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-04",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MA",
            "license": "158540",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James E Howe, M.D.
• Kristen Lomker, PHARMACIST
• Stephen F. Loughlin, D.C.
• Armineh Mirzabegian, M.D.
• Mary K Scott, OD

• Pediatrics Physician in Southboro, MA
• Providers in Southboro, MA by specialty
• Pediatrics Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.